Added skewness calculation.
Make it more general - calculate moments.
simplify using genfromtxt
Cleanup
Fixing typos.
make the test less sensitive to numerical errors
Merge pull request #587 from chrisfilo/enh/skewness

Added skewness calculation.
Merge remote-tracking branch 'upstream/master'
Added the option for resampling with isotropic voxels as available in FLIRT but not wrapped in NiPype